I was onstage one night and was singing. I hit one note, and...

I was onstage one night and was singing. I hit one note, and I just doubled over. It was like being punched hard in the back. I couldn't put my back up on the plane seat because of the pain. I got massages, thinking it was muscle spasms. The doctor told me at the time that it was my pancreas. I didn't even know.